Douyara Binbou Danshaku-ke no Suekko ni Tensei shita Rashii desu: 3 Megami ni Moratta Mittsu no Cheat de, Saikou no Slow Life wo Mezashimasu!

Tired of working himself to the bone at his grueling office job, Midori Osaka longs for the simple life. When he's reborn in a fantasy world as Hisui, the youngest son of Baron Clematis, it seems like his dream is finally coming true—until he realizes this noble house is totally broke! With a family full of bullies and a monster-infested barony, Hisui's new life isn't exactly the relaxing getaway he wanted, though he at least has kindly older sisters to lean on. Just when escape seems impossible, Hisui runs into three self-proclaimed goddesses who grant him their power and awaken his incredible magical abilities! It turns out living the simple life isn't going to be so simple after all...

(Source: J-Novel Club)